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porting an interveted sub
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<blockquote data-quote="evo2k3" data-source="post: 126173" data-attributes="member: 546246"><p>ok jmac you gave me these ssuggestions :\</p><p></p><p>Area of two 3" ports = 2(Pi)(1.5)(1.5) = 14.137 square inches</p><p></p><p>Area of four 2.5" ports = 4(Pi)(1.25)(1.25) = 17 square inches</p><p></p><p>Area of five 2" ports = 4(Pi)(1)(1) = 15.708 square inches</p><p></p><p>Area of one 5"port = (Pi)(2.5)(2.5) = 19.635 square inches</p><p></p><p>but said i would want at least 16" of port area, would the 2x3" ports (14in) create a noticable diference in port noise? secondly, how do i calulate the length they need to be, im pretty sure that they are going to need to bend around and ****, so what do i use for all of those bends, i was thinking just use 3" pvc all the way, but i dont know what i would put on the surface of the box to finish it? please include the equations for calulating port length (btw im woking with about 1.95 ft^3 before port displacment.)</p></blockquote><p></p>
[QUOTE="evo2k3, post: 126173, member: 546246"] ok jmac you gave me these ssuggestions :\ Area of two 3" ports = 2(Pi)(1.5)(1.5) = 14.137 square inches Area of four 2.5" ports = 4(Pi)(1.25)(1.25) = 17 square inches Area of five 2" ports = 4(Pi)(1)(1) = 15.708 square inches Area of one 5"port = (Pi)(2.5)(2.5) = 19.635 square inches but said i would want at least 16" of port area, would the 2x3" ports (14in) create a noticable diference in port noise? secondly, how do i calulate the length they need to be, im pretty sure that they are going to need to bend around and ****, so what do i use for all of those bends, i was thinking just use 3" pvc all the way, but i dont know what i would put on the surface of the box to finish it? please include the equations for calulating port length (btw im woking with about 1.95 ft^3 before port displacment.) [/QUOTE]
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